Translation units
Tracking changes is a very important feature, so let's make some changes and see how it works. When you open the page for editing you will see that it has been modified with markers like <!--T:1-->. These are added by the extension and help it identify which unit is which. This allows you to rearrange and edit those units. When editing the page, the markers should be left alone and their position in relation to the unit they belong to should not be changed. When moving a unit, move the unit marker, too. When deleting a unit, delete the marker too. When adding new paragraphs, new markers will be added by the software. Do not try to do this manually, it may confuse the software. [1]